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Personal profile

Research Interests

Richard Lueptow's current research interests are in three areas: 1) Modeling, simulation, and experiments on the segregation and mixing of bi-and poly-disperse granular materials, both spherical and non-spherical, in quasi-2D and fully 3D geometries; 2) A dynamical systems approach to mixing by "cutting and shuffling," particularly as applied to granular materials; 3) Molecular level simulation of transport processes in polymeric nanofiltration and reverse osmosis membranes.

Education/Academic qualification

Mechanical Engineering, ScD, Massachusetts Institute of Technology

… → 1986

Mechanical Engineering, SM, Massachusetts Institute of Technology

… → 1980

Engineering, BS, Michigan Technological University

… → 1978

Fingerprint Fingerprint is based on mining the text of the experts' scientific documents to create an index of weighted terms, which defines the key subjects of each individual researcher.

Couette flow Physics & Astronomy
Reverse osmosis Engineering & Materials Science
Granular materials Engineering & Materials Science
vortices Physics & Astronomy
axial flow Physics & Astronomy
granular materials Physics & Astronomy
Vortex flow Engineering & Materials Science
reverse osmosis Physics & Astronomy

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Grants 1995 2019

Research Output 1981 2019

Continuum modeling of granular segregation during hopper discharge

Xiao, H., Fan, Y., Jacob, K. V., Umbanhowar, P., Kodam, M., Koch, J. F. & Lueptow, R. M., Jan 16 2019, In : Chemical Engineering Science. 193, p. 188-204 17 p.

Research output: Contribution to journalArticle

Hoppers
Finite difference method
Granular materials
Advection
Kinematics

Asymmetric concentration dependence of segregation fluxes in granular flows

Jones, R. P., Isner, A. B., Xiao, H., Ottino, J. M., Umbanhowar, P. & Lueptow, R. M., Sep 1 2018, In : Physical Review Fluids. 3, 9, 094304.

Research output: Contribution to journalArticle

Granular Flow
Segregation
Fluxes
Particle size
Particle Size
1 Citations
continuum modeling
Segregation
chutes
Continuum
Advection

Effect of pressure on segregation in granular shear flows

Fry, A. M., Umbanhowar, P., Ottino, J. M. & Lueptow, R. M., Jun 27 2018, In : Physical Review E. 97, 6, 062906.

Research output: Contribution to journalArticle

Granular Flow
Segregation
Shear Flow
shear flow
beds

Persistent structures in a three-dimensional dynamical system with flowing and non-flowing regions

Zaman, Z., Yu, M., Park, P. P., Ottino, J. M., Lueptow, R. M. & Umbanhowar, P., Dec 1 2018, In : Nature communications. 9, 1, 3122.

Research output: Contribution to journalArticle

dynamical systems
Dynamical systems
folding
Stretching
Fluids